<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片试图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query"
          clearable @clear="getGooodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGooodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goodsAddPage">添加商品</el-button>
        </el-col>
      </el-row>
      <el-table :data="goodsList" border stripe>
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="140px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="120px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="200px">
          <template v-slot="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="200px">
          <template v-slot="scope">
            <el-button type="primary" icon="el-icon-edit" @click="showEditPage(scope.row.goodsList)"></el-button>
            <el-button type="danger" icon="el-icon-delete" @click="removeById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background>
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data () {
    return {
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表
      goodsList: [],
      // 总数居条数
      total: 0,
      editDialogVisible: false,
      editForm: {
        goods_name: '',
        goods_price: '',
        goods_number: '',
        goods_weight: '',
        goods_cat: 0
      }
    }
  },
  created () {
    this.getGooodsList()
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGooodsList () {
      const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败')
      }

      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    // 监听页面大小的变化
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getGooodsList()
    },
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getGooodsList()
    },
    // 删除操作
    async removeById (id) {
      // 询问用户是否删除该用户
      const confirmResult = await this.$confirm('此操作将永久删除该分类, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(() => {
        this.$message({
          type: 'info',
          message: '已取消删除'
        })
      })
      // 如果用户确认删除，返回值是字符串'confirm'
      // 如果用户取消删除，返回值是字符串'cancel'
      if (confirmResult !== 'confirm') {
        return false
      }

      const { data: res } = await this.$http.delete('goods/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除商品数据失败')
      }
      this.$message.success('删除数据成功')
      this.getGooodsList()
    },
    // 添加商品的页面
    goodsAddPage () {
      this.$router.push('/goods/add')
    },
    editDialogClosed () {
    },
    showEditPage () {
      this.$router.push('/goods/edit')
    }
  }
}
</script>

<style lang="less" scoped>

</style>
